Abstract

The performance of a gearless servo system is significantly degraded by mechanical resonances present in the system. For applications on a machine the parameters of the mechanical resonances differ from workpiece to workpiece and thus cannot be calculated a priori. The use of notch filters is a common approach to dampen these resonances. This paper introduces a novel, fast and resource efficient algorithm capable of estimating the width of a notch filter. The performance of this algorithm is validated with a MATLAB simulation with datasets from two different machines. After the notch filter has been appropriately designed, it is shown the controller gains could be increased to improve the overall tracking performance.

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